Product Summary Sheet TN2640 N-Channel Enhancement-Mode DMOS FET Applications: DC-DC converters Solid state relays Ultrasound pulsers Telecom switches Photo voltaic drivers Analog switches 10V INPUT 0V VDD 90% Pulse Generator 10% t(ON) t(OFF) tr td(ON) VDD td(OFF) 0V RGEN 10% 90% OUTPUT tf 10% OUTPUT RL INPUT D.U.T. 90% Switching Waveform and Test Circuit 3-Lead TO-252 (K4) Product Overview: TN2640K4 N-Channel Enhancement-Mode DMOS FET. The device features fast switching speeds, low parasitic capacitances and a low gate threshold for ease of driving the FET. It's D-Pak package gives designers the flexibility to use the device in a wide range of power switching and amplifying applications. It has a high breakdown voltage (400V), a low onresistance (5.0W) and a low input capacitance (225pF) for fast switching applications. Adding these features into the D-Pak package increases the power dissipation capability to 2.5W in small footprints utilizing surface mount technology. It's low input and output leakage feature improves standby power dissipation while minimizing signal attenuation. 8-Lead SOIC (LG) 3-Lead TO-92 (N3) 120711 Features: Benefits: Low threshold -- 2.0V max. Can be operated directly from logic level input signals. Eliminates the need for a level translator. High input impedance Eliminates the need to supply DC current into the gate. Low input capacitance Improves overall efficiency. Fast switching speeds Maximizes switching speed to help improve overall efficiency. Low on resistance Improves overall efficiency Free from secondary breakdown compared to bipolar transistors Maximizes efficiency, minimizes power dissipation. Improves overall reliability. Low input and output leakage Improves measurement accuracy. Minimizes signal attenuation. Addition of D-Pak option Increases the power dissipation capability for surface mount technology to 2.5W. TN2640 N-Channel Enhancement-Mode DMOS FET Ordering Information / Availability Part Number Package Option Samples Product Availability TN2640K4-G 3-Lead TO-252 (Green) Now 4-6 Weeks ARO TN2640LG-G 8-Lead SOIC (Green) Now 4-6 Weeks ARO TN2640N3-G 3-Lead TO-92 (Green) Now 4-6 Weeks ARO -G indicates the part is RoHS compliant (Green). Product Contact For any questions regarding the TN2640 please contact your local area Supertex sales office, or contact the main office in the US at: Telephone:800-222-9883 Fax:408-222-4895 E-mail:mktg@supertex.com Web site: www.supertex.com 1235 Bordeaux Drive, Sunnyvale, CA 94089